100pcs 12mm Diamond Hollow Cup Grinding Bur – 3mm Shank, 80 Grit – for Stone, Concrete & Glass Surface Removal water swivel assembly quiet operation while continuously exposing

quiet operation while continuously exposing fresh diamond grit for self-sharpening efficiency

Constructed with a seamless steel coreand an electroplated diamond surface

resulting in a flawless finish and extended belt life

Donut – circular shaping and smoothing for metals and glass

accurate grinding

100pcs 12mm Diamond Hollow Cup Grinding Bur – 3mm Shank, 80 Grit – for Stone, Concrete & Glass Surface Removal water swivel assembly quiet operation while continuously exposingDiamond Drill Bits are precision tools for fine detailing and material processing. Discover the versatility of diamond drill bits, designed with durable diamond grit for aggressive cutting, precise shaping, and long lasting performance. Available in multiple gritscoarse (40,60,80,120) for rapid material removal, and fine(240,600,1200) for detailed engraving and polishing. These tools suit lapidary artists, jewelers, sculptors, and precision craftsmen.